Interface And Indication - Ebyte E90-DTU User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.

3.1 interface and indication

Pin no.
1
2
3
4 RS485 G
5 RS485 B
6 RS485 A
7 RS232
8
9 UPDATE
10
11
12
13
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Name Function
negative pole of
GND
crimping power input
positive pole of
VCC
crimping power input
MOD Mode control
RS485 interface G
RS485 interface B
RS485 interface A
RS232 interface
ANT SMA-K interface
PWR Power indicator
Serial port data
TXD
sending indicator
Serial port data
RXD
receiving indicator
ERR warning light
power reference ground
Grounded：configuration mode
RS485 interface G is connected to the device GND
interface (recommended connection)
RS485 interface B is connected to device B interface
RS485 interface A is connected to device A interface
External threaded inner hole, length 10mm,
characteristic impedance 50Ω
- Hidden buttons, users do not need to care
Red, lights up when power is on
Yellow, blinking when sending data
Yellow, blinking when receiving data
The antenna is not connected or the voltage and
temperature are abnormal. After solve the
abnormality of antenna not connected, it needs to be
powered on again to work normally.
E90-DTU(400SL42) User Manual
Descriptioon
Power input (12V/4A)
Floating: normal mode;
Standard RS232 interface
5